Burner.



w. K. TwoMEY.

BURNER.

APPUCAT'ION FILED DEC. l2. i914.

'QC, Patented Jan. 11, 1916.

mmmunmmh WILLIAM K. TWOMEY, OF'CHICGO, ILLINOIS.

BURNER.

Specification of Letters Patent.

Application led December 12, 1914. Serial No, 876,997.

To all whom z't may concern.'

Be it known that I, WILLIAM K. TwoMEY, a citizen of the United States,residing at Chicago, in the county of Cook and State of llinois, haveinvented certain new and 'useful Improvementsin Burners, of which thefollowing is a specification.

My present invention relates to gas burners, and has for its principalobject the provision of a burner which will cause the completecombustion of the gaseous mixture so that the resulting products of thecombustion will be substantially odorless and have beneficialsterilizing properties.

The salient feature of the invention resides in so constructing theburner that the gaseous mixture is treated to successive combustiqns,with intermediate treatment to render such series of burnings possible.

A further object of the invention is the production of a burner of thisgeneral character which shall be simple in construction, economical tomanufacture, and which will comprise few parts, unlikely to becomedamaged or deranged. 'l

The invention is susceptible of embodiment in burners of various kindsadapted for different purposes, and in order that the features ofconstruction of a burner incorporating the invention may be understoodby those skilled in the art, 1 have illustrated a burner of this kindsuitable for the heating of a room, with the products of combustiondelivered into the room, which is not .objectionable in a burner of thiskind because the burned gases are practically odorless, and may beemployed for therapeutic purposes because of their sterilizingqualities.

1n the accompanying drawing illustrating such a burner, which forms apart of this specification, Figure 1 is a central, verticalcross-section through the structure; and Fig. 2 is a vertical,longitudinal section on line 2-2 of Fig. 1, the parts being viewed inthe direction indicated by the arrows.

1n this improved and novel construction, a primary burner 10 isprovided, having the usual mixing tube 11, to which gas is deliveredthrough the pipe 12, the air'being introduced through the opening 13, asis customary in constructions of this general type. r1`his burnercomprises a piece of metal of suitable Shape, perforated with holes,

through which this initial mixture of gas and air passes beforeignition.

The structure also comprises a base 14 supported on suitable feet orlegs 15, 15, and has a central opening 16, through which the upwardlybent end of the tube 11 extends, as is clearly illustrated. Such base isequipped with two bent-bar supports or standards 17, 17, on which restsa centrally apertured plate 18, through the hole 19 of which the tube 11projects, as shown. A pressurecontrol box 20, open at the bottom andtop, rests on the plate 18, inclosing the burner 10, and has itsinterior in communication with the outside atmosphere by reason of theaperture 19. This hollow, rectangular box, at its top edges, has theshort, upstanding spacing lugs 21, 21, on which a cover plate 22 rests,providing two jet-openings or slots 23, 23, at the opposite ends of thebox, beneath the cover plate.

A rectangular, hollow casing 24, with an open bottom, also rests on theplate 18 and is of substantially the'same width as the box 20, snuglyfitting over the latter, as illustrated in Fig. 1. This casing, however,is considerably longer than the box 20, as shown, providing beneath agrid or grille 25 a' pair of compartments or chambers 26, 26, at theopposite ends of the control box. This grid-or grille may be composedofa plurality of overlying, longitudinal and transverse rods or wireswith intervening apertures or spaces, such grid dividing the interiorspace of the casing 24 into a lower and an upper chamber 27. At itsfront,

upper edge, the casing 24 is supplied with al Jet-openingl ordischarge-slot 28, at which the final combustion of the gaseous mixtureoccurs.

The entire burner is incased or contained Within a housing 29, open atthe front for the discharge of the heat, and equipped with an inclinedwall 30 above the burner, which protects the flames at the jet 28 fromunduly strong currents of air. bviously, this screen or wall may, ifdesired, be covered with asbestos or similar material, against which theflames may play.

r1`he operation of this burner occurs substantially as follows: Theconstituents of the mixture of gas and air become thoroughly intermixedin passing through the tube or pipe 11 to the burner 10, and as PatentedJam 11, 1916,

such gaseous mixture escapes through the holes of the burner, it isburned, the oxygen for carrying on the combustion being supplied in partby the air mixed with the gas,

y which the products of combustion are heated andintimately mixedwith'the air entering through the opening 19, the playing of the flameson the surfaces of the box acting to break up the products of combustionto facilitate such mixture with the air. Such gaseous mixture, as itescapes from the jet-openings or slots 23, is again burned, the flamesbeing in the chambers 26, 26, as will be readily understood. Theswirling of the gases in these chambers, the changing of' theirdirection of travel, and their temporary retention in these chambers bythe grid 25, subjects the gaseous mixture additionally to the heat ofthe control box 20, bringing about a further admixture of the gaseouselements preparatory to additional combustion. through the' intersticesor apertures of the heated grid 25, which causes their subdivision intorelatively small jets, each of which is heated by the grid. Then thesejets are permitted to combine again in the chamber 27, in which theremay or may not be a spasmodic or intermittent burning of the lightergases. From this chamber the heated mixture escapes through the jet orslot Q8, at which it is again burned in a steady blue flame, thecombustion of which may or may not be assisted by the oxygen of theexternal air. The 4issuing products from these successive combustionsare practically and substantially free from odor, and b v reason oftheheat to which they have been subjected, they are free from bacteriaandpossess sterilizing characteristics or therapeutic properties. Stateddifferently, the improved and novel construction of burner provides atortuous or bafiied passage through it, through which the gaseousmixture passes, such passage at various points being restricted orcontracted so that the mixture may be subjected to a succession ofcombustions. The retarded transit of the mixture through the burnerresults in its more or less prolonged heating, and the peculiarstructural features of the burner construction described above caus'ethe intimate intermixture of the gaseous ingredients The mixture thenpasses up after each burning, preliminary to the next combustion. v

While I have herein described a particular embodimentof this invention,itis to be understood that the mechanical characteristics of the burnermay be lmodied within comparatively wide limits without departure fromthe substance of the inven-. tion and still retain all of itssubstantial advantages. .For this reason,l the appended j I claim:

1.4 In a device'of the ch/aracter described, the combination of threeburners arranged in series to compel the gaseous mixture to passsuccessively through them, and means toiupply the total air of themlxture to 4theilame. of the initial burner, whereby the Mure may beburned at each burner, substantially as described.

2. In a device of the character described,

the combination of three burners, the outer one inclosing the other two,and the intermediate oneinclosing the inner one, whereby the gaseousmixture is compelled to pass successively through the burners, at

each of which combustion may take place,

and means to supply the total air of the mixture to the ame of`the-initial burner,

substantially as described.

3. In a device of the character described,

the combination Yof four burners arranged in series, compelling thegaseous mixture to pass successively through them, whereby the mixturemay be burned at each burner, and means to supply the tot-al air of themixture to the flame of the initial burner. substantially as described.

1. In a device of the character described,` the combination of a burner,and a box provided with a jet-opening, inclosing said burner and of suchsize that the fiames of the burner impinge on thel box-walls. the

gaseous mixture being adapted to burn lboth at the burner and at thejet-opening, the total air of the gaseous mixture being sup,

plied to the ame of said burner, substantially as described.

5. In a device of the character described, the combination of a burner,and an apertured box provided with a jet-opening, in-

closing said burner, the gaseous mixture be- 45 of the ing adapted toburn both at the burner and at the jet-opening of the box, the outsideair entering the box through the aperture of the latter, whereby thetotal air of the .5 mixture is supplied to the flame of the burner,substantially as described.

6.y In a device of the character described, the combination of a burner,and an apertured box provided with a jet-openingVv inlo closing saidburner, the box being of such size that the flames of the burner impingeon the box walls, the gaseous mixture being adapted to burn bothattheburner and at the jet-opening, outside air having access to the interiorof the box through the aperture of the latter, whereby the total air ofthe mixture is supplied to the.lame of the burner, substantially asdescribed.

7 .-n aN device of the character described,

the combination of a primary burner, a box provided with a jet-openinginclosing such burner, and a casing having a jet-opening inclosing saidbox and primary burner, whereby the gaseous mixture is adapted to passsuccessively through the burner, the box and its jet-opening, and thecasing and its jet-opening, and to be burned at the burner and at eachof said jet-openings, the

Atotal air for thel gaseous mixture being supplied to the llame of theburner and of such size that the flames of the burner impinge upon thebox-walls, and a casing having a jet-opening inclosingv said box andprimary burner, whereby the gaseous mixture is adapted to pass succesi^1sively through the burner, the box r4and its jet-opening, and thecasing and its jet-opening, and be burned at the burner and at each ofsaid jet-openings, the total air for the gaseous mixture being suppliedto the flame primary burner, substantially as described.

9. lira device of the character described,

the combination of a primary burner, a relatively small control-boxinclosing said burner and provided with ajet-opening, said control boxsteadying and equalizing the pressure, and a casing having a jet-openinginclosing said box and primary burner,

whereby the gaseous mixture is adapted to E pass successively throughthe burner, the

u box and its jet-opening, and the casing and its jet-opening, and to beburned at the burner and at each of said jet-openings, the total air forthe gaseous mixture being sup- GJ@ plied to the flame of the primaryburner,

substantially as described.

10. ln a device of the character described, the combination of a primaryburner, a box provided with a jet-opening inclosing said burner, saidbox having an air-admission opening for the entrance of the outside air,and a casing having a jet-opening inclosing said box and primary burner,whereby the gaseous mixture is adapted to pass successively through theburner, the box and its jet-opening, and the casing and its jet-opening,and to be burned at the burner and at each of said jet-openings, thetotal air for the gaseous mixture being supplied to the llame of theprimary burner, substantially as described.

11. In a device of the character described, the combination of a primaryburner, a box provided with a jet-opening inclosing said burner and ofsuch size that the llames of the burner impinge upon the box-walls, said.box having an air-admission opening for the entra-nce of the outsideair, and a casing having a jet-opening inclosing said box and primaryburner, whereby the gaseous mixture is adapted to pass successivelythrough the burner, the box and its `jet-opening, and the casing and itsjet-opening, and to be burned at the burner and at each of saidjet-openings, the total air for the gaseous mixture being supplied tothe flame of the primary burner, substantially as described.

12.' In a device of the character described, the combination of aprimary burner, a relatively small control-box to steady and equalizethe pressure, inclosing said burner, said box having an air-admissionopening for theentrance of outside air, and a casing having ajet-opening, inclosing said box and primary burner, whereby the gaseousmixture is adapted to pass successively through the burner, the box andits jet-opening, and the casing and its jet-opening, and to be burned atthe burner and at each of said i'. jet-openings, the total air for thegaseous mixture being-'supplied to the llame of the primary burner,substantially as described.

13. ln a device of the character described, the combination of a primaryburner, a box provided with a jet-opening, inclosing said burner, acasing having a jet-opening, inclosing said box and primary burner, anda grid in said casing between said box and casing jet-opening, wherebythe gaseous mixture` is adapted to pass successively through the burner,the box and its jetopening, and the casing and its jet-opening,

and beburned at the bui-ner and at each of said jet-openings, and alsobe subdivided into relatively small bodies as it passes through saidgrid, the total air for the gaseous mixture being supplied to the flameof the primary burner, substantially as described.

14. ln a device of the character described, the combination of a primaryburner, a box provided with a jet-opening, inclosing said burnei` and ofsuch size that the flames of the burner impinge on the box-walls, acasing having a jet-opening, inclosing saidbox and primary burner, and agrid in said cas- 15. In a device of the character described,

the combination of a primary burner, a relatively small control-box tosteady and equalize the pressure, inclosing said burner and providedwith a jet-opening, a casing having a jet-opening, inclosing said boxand primary burner, and a grid in said casing between said box andcasing jet-opening, whereby the gaseous mixture is adapted to passsuccessively through the burner, the box and its jet-opening, the casingand its grid and jet-opening, and be burned at'the burner and at each ofsaid jet-openings, such gaseous mixture being divided into relativelysmall parts as it passes through the grid, the total air Afor thegaseous mixture being supplied to the iame of the primary burner,substantially as described.

16. In a device of the character described, the combination of a primaryburner, a box inclosing said burner and provided with a jet-opening andan air-admission opening for the entrance of the external air, a casinghaving a jet-opening, inclosing said box and primary burner, and agridin said casing between the box and casing jet-opening,

whereby the gaseous mixture is adapted to' pass successively through theburner, box

tially as described'.

and casing, and be burned at the burner and at each of saidjet-openings, such gaseous mixture being divided into relatively smallparts as it passes through said grid, the total air for the gaseousmixture being supplied to the flame of the primary burner, substanf17.\In a device of the character described, the combinationof aprimaryburner, a relatively small control-box inclosing said burner and adaptedto steady and equalize the pressure, the control box being of such sizethat the flames of the burner impinge on the box-walls, a casing havinga jetopen ing, inclosing said box and primary burner, and a grid in saidcasing between said box and casing ]etopen1ng, whereby the gaseous'mixture is adapted to pass successively through the burner, the controlbox, and the lcasinggand. be burned lat the burner and at each of saidjet-openings,'the gaseous mix-v ture being divided into relatively smallparts as it passes through said grid, the total air for the gaseousmixture being supplied to the flame of the primary burner, substantiallyas described.

18. A burner structure of the character described, having a baffledpassage therethrough for the gaseous mixture, such passage beingrestrlcted at successive points,

forming jet-openings-at which the mixture for the transit of the gaseousmixture, and

havingmeans permitting the burning of the mixture at a plurality ofsuccessive points, such passage being constructed to retard the movement`of the gaseous mixture through it, whereby to subject the mixture tothe heat of the heated burner parts between the successive combustions,the total air for the gaseous mixturey being supplied to the ame p ofthe primary burner, substantially as described.

20. In a `burner construction of the character described, thecombination of a casing, a grid in said casing, a burner, and means tosupply a gaseous mixture tosaid burner, the grid and burner beingpositioned so that the products of combustion from the burner, passthrough the grid, said grid being composed of a plurality of crossingrods whose bottom surfaces are transversely curved.

21. In a burner construction of the character described, thecombinationof a casing, a grid in said casing, a burner, and means to supply agaseous mixture to said burner, the said grid and burner beingpositioned so that the products of combustion from the burner passthrough the grid, said grid be-v a grid in said casing, a burner, andmeans to v Asupply a gaseous mixture to said burner, the

said grid and burner being positioned so that the products of combustionfrom the burner pass through the grid, said grid being composed of aplurality of crossing rods whose top, bottom and side surfaces aretransversely curved. c WILLIAM K. TWOMEY.

Witnesses:

FRANKLIN M. WARDEN, j e f i, ALVAREZ A. BARNES.

